Does SS have a feature that enables visitors to print the page they're on? Some websites have icons for printing or emailing or saving pages as pdfs. Not sure how that's done, but would love to give my visitors an icon so they can print the page.
Well most browsers have this feature built in without adding any code to the page. CTRL+ P (Or File -> Print :D). If you want a print button for the less adept users then have a look at the sharethis module - http://silverstripe.org/share-this-module/. It includes a Print this page button which you can include on your pages.
The code to print a page is pretty simple as well - You can add a link like this to your themes Page.ss file.